Jar for fishing and drilling tools



c. T. FLEMING JAR FOR FISHING AND DRILLING TOOLS Dec. 20, 1927.

Original Filed Dec. 23. 1925 nventor 6127f I Zawz'ry I By m Attorney Patented Dec.- 20, 1927.

UNITED STATES PATENT OFFICE.

CHARLES TRUMAN FLEMING, F TAFT, CALIFORNIA, ASSIGNOR OF 'ONE-HALFII'O WILLIAM J. BAY, OF TAI'T, CALIFORNIA JAB FOR FIS HIN G AND DRILLING TOOLS.

Original application filed December 23, 1925, Serial No. 77,314. -,Divided and this application filed May 25,

1926. Serial No. 111,615.

The invention consists in the improvementas hereinafter .described and definitely claimed, the said improvement co stituting l a difierentspecies from that clai ed in my contemporary application, filed December 23, 1925, Serial No. 77,314, of which this,-

application is a division.

In the accompanying drawing, forming part of this specification e figure is a view partly in section and partly in elevation illustrative of the em-.

bodiment of my invention designed more particularly for use in conjunction with fishing and various kinds of repair work.

Among other elements my novel jar comprises a casing 1. The said casing 1" is tapered at 4" and appropriately threaded at 6, and the upper end portion ,of the said casing 1 is interiorly threaded as designated by 7 for the engagement of a mem-- ber 10 which is fixed with respect to the casing 1 and is provided with lower and upper reversely arranged clutch faces 9 and 9*, respectively. A tubular member 11 is movable rectilinearly and about its axis in a bore in the member 10, and carried on the lower portion of the said tubular member 11 is a member 7 with a clutch face 7 complementary to and adapted to cooperate with the before mentioned clutch face '9".

Fixedly secured on the tubular member 11 is a member 8 appropriately threaded as designated by 12, and at its lower end the 40 said member 8" is provided with a clutch face 8" complementary to the before mentioned clutch face ,9 of the' member 10.

The embodiment described in the foregoing is designed more particularly for comb1- nation fishing of all kinds incident to general repair work capable of bemgaccomplished by a rotary outfit, and man festly the said embodiment is adapted for the adequate circulation of water through the bore 12 of the member 8" as well as through the bore of the tubular member 11%, It will also be readily appreciated from. the drawing that the member 7 is capable of being clutched to the member 10 and that the member 8 in turn, is capable of being clutched to the memberlO. i

It will further be manifest from the drawing that the member '10" being held stationary, upward .movement of the member 7 followed by rotation of the 'said member (if 7 toward the right .will'bring about an upward jar. Again it will be understood thatv if the member 10 be held stationary and the member 8 be pressed downwardly and turned toward the right,-a downward 'jar .will be brought about. It will also be appreciated that with every revolution one or two complete jars, as desired, will be brought about either on the up thrustor the down thrust.

My novel jar is susceptible of use with any tool such as is in generalvuse for drilling or 4 fishing.

.I have specifically described-the preferred embodiment of my invention in order to impart an exact understandingof the same. I 'do not desire, however, to be understood as limiting myself to the structuredisclosed, nor :to the relative arrangement of the elements, my invention being defined by my appended claim, within the scope of which structural changes and changes in relative arrangement may be made without afiecting my invention.

Having described my invention, what I claimand desire to secure by Letters-Patent, 1s

A jar comprising a hollow casing body having a conduit in the lower portion thereof, a member. threadedly secured in the upper end portion of said casing body and provided with reversely arranged clutch faces, and also provided with a central bore, and a rectilinearly movable and rotatable member having a tubular portion extending through and movable in the said bore .of the first named member and also having at opposite sides of said member and threadedly secured on the tubular portion, portions wlth reve'rsely arranged clutch faces for cooper- 5 ation with the first-named member; the clutch portion on the upper portion of the tubular part being provided with a bore in linearly movable member have continuous circulation passages.

In testimony whereof I aflix my signature.

CHARLES. TRUMAN FLEMING. 

